// NOTE: vitest-browser fails silently when the project path contains '+' (common in git worktrees
// named 'feat+issue-NNN-slug'). If tests fail with iframe routing errors, copy the frontend
// directory to a path without '+' (e.g. /tmp/fe-copy) and run the suite from there.
import { describe, expect, it, vi, afterEach } from 'vitest';
import { cleanup, render } from 'vitest-browser-svelte';
import { page } from 'vitest/browser';
import InterpretationChipRow from './InterpretationChipRow.svelte';
import type { components } from '$lib/generated/api';

type NlQueryInterpretation = components['schemas']['NlQueryInterpretation'];
type PersonHint = components['schemas']['PersonHint'];
type TagHint = components['schemas']['TagHint'];

afterEach(() => cleanup());

const makePerson = (id: string, displayName: string): PersonHint => ({ id, displayName });

const makeInterpretation = (
	overrides: Partial<NlQueryInterpretation> = {}
): NlQueryInterpretation => ({
	resolvedPersons: [],
	ambiguousPersons: [],
	keywords: [],
	resolvedTags: [],
	rawQuery: 'test',
	keywordsApplied: true,
	tagsApplied: false,
	...overrides
});

describe('InterpretationChipRow', () => {
	it('renders type-prefixed labels for sender, date and keyword chips', async () => {
		render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedPersons: [makePerson('p1', 'Walter Raddatz')],
				dateFrom: '1914-01-01',
				dateTo: '1918-12-31',
				keywords: ['krieg']
			}),
			onRemoveChip: vi.fn()
		});
		await expect.element(page.getByText('Absender: Walter Raddatz')).toBeInTheDocument();
		await expect.element(page.getByText('Zeitraum: 1914–1918')).toBeInTheDocument();
		await expect.element(page.getByText('Stichwort: krieg')).toBeInTheDocument();
	});

	it('calls onRemoveChip with "sender" when the sender chip × is clicked', async () => {
		const onRemoveChip = vi.fn();
		render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedPersons: [makePerson('p1', 'Walter Raddatz')]
			}),
			onRemoveChip
		});
		await page.getByRole('button', { name: /Absender: Walter Raddatz/ }).click();
		expect(onRemoveChip).toHaveBeenCalledWith('sender', undefined);
	});

	it('removes a chip from the DOM but keeps the rest when one × is clicked', async () => {
		const { container } = render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedPersons: [makePerson('p1', 'Walter Raddatz')],
				dateFrom: '1914-01-01',
				dateTo: '1918-12-31',
				keywords: ['krieg']
			}),
			onRemoveChip: vi.fn()
		});
		expect(container.querySelectorAll('[data-chip-type]')).toHaveLength(3);
		await page.getByRole('button', { name: /Absender/ }).click();
		await vi.waitFor(() => expect(container.querySelectorAll('[data-chip-type]')).toHaveLength(2));
	});

	it('renders a single directional chip with an arrow for a 2-name query', async () => {
		const { container } = render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedPersons: [makePerson('p1', 'Walter Raddatz'), makePerson('p2', 'Emma Raddatz')]
			}),
			onRemoveChip: vi.fn()
		});
		expect(container.querySelectorAll('[data-chip-type="directional"]')).toHaveLength(1);
		await expect.element(page.getByText(/→/)).toBeInTheDocument();
	});

	it('calls onRemoveChip with "directional" when the directional chip × is clicked', async () => {
		const onRemoveChip = vi.fn();
		render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedPersons: [makePerson('p1', 'Walter Raddatz'), makePerson('p2', 'Emma Raddatz')]
			}),
			onRemoveChip
		});
		await page.getByRole('button', { name: /Walter Raddatz/ }).click();
		expect(onRemoveChip).toHaveBeenCalledWith('directional', undefined);
	});

	it('does not render keyword chips when keywordsApplied is false', async () => {
		const { container } = render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				keywordsApplied: false,
				keywords: ['krieg', 'brief']
			}),
			onRemoveChip: vi.fn()
		});
		expect(container.querySelectorAll('[data-chip-type="keyword"]')).toHaveLength(0);
	});

	it('renders no keyword chips when keywords is empty', async () => {
		const { container } = render(InterpretationChipRow, {
			interpretation: makeInterpretation({ keywordsApplied: true, keywords: [] }),
			onRemoveChip: vi.fn()
		});
		expect(container.querySelectorAll('[data-chip-type="keyword"]')).toHaveLength(0);
	});

	it('renders exactly one keyword chip per keyword', async () => {
		const { container } = render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				keywordsApplied: true,
				keywords: ['krieg', 'brief', 'front']
			}),
			onRemoveChip: vi.fn()
		});
		expect(container.querySelectorAll('[data-chip-type="keyword"]')).toHaveLength(3);
	});

	it('keeps the × button in the DOM when a display name is 100 characters', async () => {
		const longName = 'W'.repeat(100);
		render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedPersons: [makePerson('p1', longName)]
			}),
			onRemoveChip: vi.fn()
		});
		await expect
			.element(page.getByRole('button', { name: new RegExp('Absender') }))
			.toBeInTheDocument();
	});

	// ── theme chips ─────────────────────────────────────────────────────────────

	const makeTag = (id: string, name: string, color?: string): TagHint => ({ id, name, color });

	it('renders theme chips when tagsApplied is true', async () => {
		const { container } = render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedTags: [makeTag('t1', 'Hochzeit')],
				tagsApplied: true
			}),
			onRemoveChip: vi.fn()
		});
		expect(container.querySelectorAll('[data-chip-type="theme"]')).toHaveLength(1);
		await expect.element(page.getByText(/Thema: Hochzeit/)).toBeInTheDocument();
	});

	it('renders no theme chips when tagsApplied is false', async () => {
		const { container } = render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedTags: [makeTag('t1', 'Hochzeit')],
				tagsApplied: false
			}),
			onRemoveChip: vi.fn()
		});
		expect(container.querySelectorAll('[data-chip-type="theme"]')).toHaveLength(0);
	});

	it('renders exactly N theme chips for N resolved tags', async () => {
		const { container } = render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedTags: [makeTag('t1', 'Krieg'), makeTag('t2', 'Hochzeit'), makeTag('t3', 'Familie')],
				tagsApplied: true
			}),
			onRemoveChip: vi.fn()
		});
		expect(container.querySelectorAll('[data-chip-type="theme"]')).toHaveLength(3);
	});

	it('calls onRemoveChip with "theme" and tag name when × is clicked', async () => {
		const onRemoveChip = vi.fn();
		render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedTags: [makeTag('t1', 'Hochzeit')],
				tagsApplied: true
			}),
			onRemoveChip
		});
		await page.getByRole('button', { name: /Thema: Hochzeit/ }).click();
		expect(onRemoveChip).toHaveBeenCalledWith('theme', 'Hochzeit');
	});

	it('applies inline color style for a tag with a color', async () => {
		const { container } = render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedTags: [makeTag('t1', 'Hochzeit', 'sage')],
				tagsApplied: true
			}),
			onRemoveChip: vi.fn()
		});
		const chip = container.querySelector('[data-chip-type="theme"]') as HTMLElement;
		expect(chip.style.backgroundColor).toBeTruthy();
	});

	it('omits color style for a tag with no color', async () => {
		const { container } = render(InterpretationChipRow, {
			interpretation: makeInterpretation({
				resolvedTags: [makeTag('t1', 'Hochzeit')],
				tagsApplied: true
			}),
			onRemoveChip: vi.fn()
		});
		const chip = container.querySelector('[data-chip-type="theme"]') as HTMLElement;
		expect(chip.getAttribute('style')).toBeFalsy();
	});
});